def add_func(siteUrl):
    finalSites=[0]*27
    Alphabet=['a','b','c','d','e','f','g','h','i','j','k','l','m','n','o','p'
              ,'q','r','s','t','u','v','w','x','y','z','-']
    for i in range(0,27):
        finalSites[i]=siteUrl+'&letter='+Alphabet[i]
    return(finalSites)
